This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 65 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 65 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the function of the veins in the circulatory system? A) Carry oxygenated blood from the heart to the body. B) Carry deoxygenated blood from the body to the heart. C) Carry oxygenated blood from the lungs to the heart. D) Carry deoxygenated blood from the heart to the lungs. Show Answer Correct Answer: B) Carry deoxygenated blood from the body to the heart. 2. Where can you find a synapse? A) Inside the nucleus of a neuron. B) Between a neuron's dendrite and its terminal. C) Between separate neurons. D) Surrounding the body of a neuron. Show Answer Correct Answer: C) Between separate neurons. 3. Happens when the brain does not receive enough blood A) Strokes. B) Heart attack. C) Arteriosclerosis. D) Caring for your circulation system. Show Answer Correct Answer: A) Strokes. 4. Which type of circulation sends blood from the heart to the lungs and back, picking up oxygen?Carbon dioxide and other waste are released into the blood in the alveoli sac. A) Pulmonary circulation. B) Systemic circulation. Show Answer Correct Answer: A) Pulmonary circulation. 5. Blood enters the right atrium from the A) Right atrium. B) Right ventricla. C) Vena cava. D) Pulmonary vein. Show Answer Correct Answer: C) Vena cava. 6. What causes blood pressure? A) The force with which the ventricles contract. B) The speed at which oxygen is returned to blood in the lungs. C) The strength of the muscles in the walls of the capillaries. D) The rate at which blood flows through the heart. Show Answer Correct Answer: A) The force with which the ventricles contract. 7. Within the lungs, the exchange of oxygen and carbon dioxide occurs between the ..... and the capillaries. A) Alveoli. B) Bronchioles. C) Bronchi. D) None of above. Show Answer Correct Answer: A) Alveoli. 8. Which one is not a blood vessel? A) Arteries. B) Capillaries. C) Veins. D) Plasma. Show Answer Correct Answer: D) Plasma. 9. Which type of muscle is found in the heart? A) Smooth muscle. B) Skeletal muscle. C) Cardiac muscle. D) Striated muscle. Show Answer Correct Answer: C) Cardiac muscle. 10. What abbreviation refers to the presence of certain proteins? A) A. B) AA. C) Rh factor. D) Rh sector. Show Answer Correct Answer: C) Rh factor. 11. Contraction and relaxation of the heart is due to ..... A) Fatigued heart muscles. B) Electrical impulse. C) Neverending heartbeats. D) Atriosinal Node. Show Answer Correct Answer: B) Electrical impulse. 12. Plasma is.....? A) Campbell's soup. B) Have a nucleus. C) Liquid part of the blood, consisting of water. D) To scavenger. Show Answer Correct Answer: C) Liquid part of the blood, consisting of water. 13. The right side of the heart carries A) Oxygen rich blood. B) Oxygen poor blood. Show Answer Correct Answer: B) Oxygen poor blood. 14. Where does deoxygenated blood return for oxygenation in the circulatory system? A) Kidneys. B) Lungs. C) Liver. D) Stomach. Show Answer Correct Answer: B) Lungs. 15. ..... have very thin walls so gases and nutrients can easily pass through them to the cells. A) Capillaries. B) Veins. C) Arteries. D) Plasmas. Show Answer Correct Answer: A) Capillaries. 16. HUMAN HEART CONTAINS..... CHAMBERS. A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 17. Membrane that surrounds the lungs A) Pericardium. B) Pleural membrane. C) Alveolus. D) Septum. Show Answer Correct Answer: B) Pleural membrane. 18. WE CARRY OXIGENLLEVAMOS EL OXÍGENO A) WHITE CELLS. B) RED CELLS. C) PLATELETS. D) PLASMA. Show Answer Correct Answer: B) RED CELLS. 19. Heart Attack occurs when A) The blood supply to the heart is restricted. B) The heart beats irregularly. C) Blood flow to the brain is interrupted. D) The heart can no longer maintain its regular pumping rate. Show Answer Correct Answer: A) The blood supply to the heart is restricted. 20. Which of these blood samples most likely came from the left ventricle? A) Sample A (bright red blood cells). B) Sample B (dark red blood cells). C) Both samples could have come from the left ventricle. D) Neither sample could have come from the left ventricle. Show Answer Correct Answer: A) Sample A (bright red blood cells). ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books